Heat exchanging apparatus and manufacturing method therefor

ABSTRACT

A heat exchange apparatus and a manufacturing method therefor are disclosed. The heat exchange apparatus comprises a valve core part and a core body part. The valve core part is provided with a valve base part. The valve seat part is at least partly arranged in a first conduit. The valve base part is provided with a base section with a bottom opening and a middle section with a peripheral opening. The valve base part is provided with a throttling hole. The throttling hole is in communication with the peripheral opening and the bottom opening. The middle section is arranged on a sheet part and the peripheral opening is in communication with inter-sheets channels. The heat exchanging apparatus comprising a connecting element. The connecting element is at least partly inserted into the first conduit. The bottom opening is in communication with a connecting cavity.

This disclosure is a national phase application of PCT internationalpatent application PCT/CN2021/090451, filed on Apr. 28, 2021 whichclaims the benefit of priorities to the following three Chinese patentapplications, all of which are incorporated herein by reference,

-   -   1) Chinese Patent Application No. 202010362743.9, titled “HEAT        EXCHANGE APPARATUS”, filed with the China National Intellectual        Property Administration on Apr. 30, 2020;    -   2) Chinese Patent Application No. 202010362753.2, titled “HEAT        EXCHANGE APPARATUS AND MANUFACTURING METHOD THEREFOR”, filed        with the China National Intellectual Property Administration on        Apr. 30, 2020; and    -   3) Chinese Patent Application No. 202010363934.7, titled “HEAT        EXCHANGE APPARATUS”, filed with the China National Intellectual        Property Administration on Apr. 30, 2020.

FIELD

The present disclosure relates to the technical field of thermalmanagement, and in particular to a heat exchange apparatus.

BACKGROUND

A heat exchanger and an expansion valve are required in a thermalmanagement system, and the two members are generally connected bypipeline connection in the thermal management system.

The heat exchanger can also be integrated with the expansion valve, anda valve body of the expansion valve is fixed to the heat exchanger, sothat an overall structure is compact. However, a part of connectingpipes is still connected to the valve body of the expansion valve.

SUMMARY

An object according to the present disclosure is to provide a heatexchange apparatus with a compact structure and a manufacturing methodtherefor.

A heat exchange apparatus is provided according to an embodiment of thepresent disclosure, which includes a valve core member, a core bodymember, and the valve core member is arranged fixed to the core bodymember;

the core body member includes a sheet portion, the sheet portionincludes at least a first conduit, a second conduit and an inter-sheetspassage, the first conduit, the inter-sheets passage and the secondconduit are in communication;

the valve core member includes a valve seat portion, the valve seatportion includes a bottom section and a middle section, the bottomsection includes a bottom opening, the middle section includes aperipheral opening, the valve seat portion includes a throttle hole, theperipheral opening is in communication with the bottom opening throughthe throttle hole, the middle section and the bottom section are locatedin the first conduit, and the peripheral opening is in communicationwith the first conduit;

the heat exchange apparatus includes a connecting member, the connectingmember includes a communication cavity, the connecting member includes afirst end portion, the first end portion of the connecting member islocated in the first conduit, the bottom opening of the bottom sectionis in communication with the communication cavity;

the core body member includes a first side portion and a second sideportion, at least part of the valve core member is located on a sidewhere the first side portion is located, the heat exchange apparatusincludes a communication passage, the communication passage is locatedon a side where the second side portion is located, and thecommunication passage is in communication with the communication cavity.

A manufacturing method for a heat exchange apparatus is further providedaccording to the present disclosure, which includes:

provide a sheet portion, and put the stacked sheet portion into afurnace for welding, in which the welded sheet portion includes a firstconduit, a second conduit and an inter-sheets passage;

provide a valve core member and a connecting member, protrude part of avalve seat portion of the valve core member into the first conduit ofthe welded sheet portion, in which the valve seat portion includes abottom section and a middle section and the middle section includes aperipheral opening, protrude part of the bottom section into theconnecting member, sealingly connect the bottom section with theconnecting member by providing a first sealing member, and assemble andfix the valve core member and the connecting member; and

assemble and fix the valve core member and the core body member.

The heat exchange apparatus and the manufacturing method therefor areprovided according to the embodiments of the present disclosure, thebottom section and the middle section of the heat exchange apparatus arelocated in the first conduit, the bottom section of the valve seatportion includes the bottom opening, the middle section includes theperipheral opening, the peripheral opening is in communication with thefirst conduit, and the bottom opening is in communication with thecommunication cavity, and the communication passage of the heat exchangeapparatus is in communication with the communication cavity, so that theheat exchange apparatus has a compact structure. In addition, if anexternal connecting pipe needs to be connected, the mounting of theexternal connecting pipe is relatively simple.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural view of a first embodiment of a heatexchange apparatus;

FIG. 2 is a schematic cross-sectional view of FIG. 1 ;

FIG. 3 is a schematic perspective exploded view of FIG. 1 ;

FIG. 4 is a schematic cross-sectional view of a second embodiment of theheat exchange apparatus;

FIG. 5 is a schematic perspective exploded view of the heat exchangeapparatus shown in FIG. 4 ;

FIG. 6 is a schematic cross-sectional view of a third embodiment of theheat exchange apparatus;

FIG. 7 is a schematic perspective exploded view of the heat exchangeapparatus shown in FIG. 6 ;

FIG. 8 is a schematic partial cross-sectional view of a fourthembodiment of the heat exchange apparatus, in which a structure of asheet portion is omitted;

FIG. 9 is a schematic partial cross-sectional view of a fifth embodimentof the heat exchange apparatus, in which the structure of the sheetportion is omitted;

FIG. 10 is a schematic cross-sectional view of a sixth embodiment of theheat exchange apparatus;

FIG. 11 is a schematic cross-sectional view of a seventh embodiment ofthe heat exchange apparatus;

FIG. 12 is a schematic cross-sectional view of an eighth embodiment ofthe heat exchange apparatus;

FIG. 13 is a schematic partial cross-sectional view of a ninthembodiment of the heat exchange apparatus, in which a matching mode of aconnecting member and the sheet portion is illustrated;

FIG. 14 is a schematic partial cross-sectional view of a tenthembodiment of the heat exchange apparatus, in which a matching mode ofthe connecting member and a bottom pressing block is illustrated;

FIG. 15 is a schematic cross-sectional view of an eleventh embodiment ofthe heat exchange apparatus; and

FIG. 16 is a schematic cross-sectional view of a twelfth embodiment ofthe heat exchange apparatus.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Referring to FIGS. 1 to 3 , FIG. 1 is a schematic structural view of aheat exchange apparatus 1.

The heat exchange apparatus 1 includes at least a first flow passage 101and a second flow passage, a fluid in the first flow passage 101 canexchange heat with a fluid in the second flow passage; the fluid in thefirst flow passage 101 may be a refrigerant, and the fluid in the secondflow passage may be a coolant. The heat exchange apparatus 1 may furtherinclude a third flow passage, a fourth flow passage, and the like.

The heat exchange apparatus 1 includes a valve core member 11, a corebody member 12 and a connecting member 13, where the valve core member11 is assembled with and fixed to the core body member 12, and theconnecting member 13 is arranged fixed to the core body member 12, suchas by welding. The valve core member 11 may have, for example, a valvecore structure of an expansion valve.

The core body member 12 includes a top pressing block 122, a sheetportion 121 and a bottom pressing block 123, where the top pressingblock 122, the sheet portion 121 and the bottom pressing block 123 arefixed by welding. The sheet portion 121 includes at least a firstconduit 1211, a second conduit 1213 and an inter-sheets passage 1212,the first conduit 1211, the inter-sheets passage 1212 and the secondconduit 1213 are in communication, and the first flow passage 101includes part of the first conduit 1211, the second conduit 1213 and theinter-sheets passage 1212.

Herein, the first conduit 1211 and the second conduit 1213 are conduitswhen the core body member 12 is not assembled with the valve core member11. Even if a member or part is located inside other members after thefirst conduit 1211 and the second conduit 1213 are assembled with thevalve core member or the connecting member, it still means that themember or the part herein is located in the first conduit or the secondconduit as long as a position of the member is in the first conduit orthe second conduit of the core body member.

The sheet portion 121 includes multiple stacked sheets, adjacent sheetsare fixed by welding, each sheet includes at least a first hole and asecond hole, the first holes of the sheets are aligned and the secondholes of the sheets are aligned along a stacking direction of thesheets. The first hole and the second hole are located adjacent to anedge of the sheet, so that the fluid flowing through the sheet can havea relatively long flow path, which is beneficial to improving the heatexchange efficiency. The first holes of the sheets are aligned to form apart of the first conduit 1211, and the second holes of the sheets arealigned to form a part of the second conduit 1213.

The top pressing block 122 includes a third hole 1221, which is alignedwith the first holes, and the “aligned” herein includes that an axis ofthe first holes is coaxial with or parallel to an axis of the thirdhole; the bottom pressing bock 123 includes a communication hole 1231,which is aligned with the first holes, and the “aligned” herein includesthat the axis of the first holes is coaxial with or parallel to the axisof the communication hole.

The heat exchange apparatus 1 includes a communication passage 103 andanother communication passage 104, the communication passage 103 is incommunication with a communication cavity 138 of the connecting member13, and the another communication passage 104 is in communication withthe second conduit 1213, so that the fluid can flow in from thecommunication passage 103 and flow through the communication cavity 138of the connecting member 13, and flow in the first flow passage afterbeing throttled by the valve core member 11, and then flow in theinter-sheets passage 1212 of the core body member 12, and the fluidexchanges heat with the fluid in the second flow passage in theinter-sheets passage 1212, which has a simple flow path and high heatexchange efficiency. Of course, in other cases, the other communicationpassage 104 may be not in direct communication with the second conduit1213. For example, a pipe may be provided in the second conduit 1213,and the second conduit 1213 is in communication with the othercommunication passage 104 through the pipe. In other cases, the anothercommunication passage 104 may be not in communication with theinter-sheets passage 1212 through the second conduit 1213, the anothercommunication passage 104 and the communication passage 103 may bearranged on a same side of the core body member 12, and the anothercommunication passage 104 may be adjacent to the communication passage103 and be not in direct communication with the communication passage103.

The core body member 12 includes a first side portion 124 and a secondside portion 126, at least part of the valve core member 11 is locatedon a side where the first side portion 124 is located, or in otherwords, the first side portion 124 of the core body member 12 refers to aside of the core body member 12 provided with the valve core member 11.The communication passage 103 is located on a side where the second sideportion 126 is located, and the communication passage 103 is incommunication with the communication cavity 138. For example, the valvecore member 11 includes a coil portion 1120, and the coil portion 1120is located on the side where the first side portion 124 is located.

At least part of the valve core member 11 protrudes into the firstconduit 1211, and at least part of the connecting member 13 protrudesinto the first conduit 1211. The valve core member 11 includes a valveseat portion 111, at least part of the valve seat portion 111 is locatedat the first conduit 1211, the valve seat portion 111 includes aperipheral opening 1113, a throttle hole 1114 and a bottom opening 1115,where the peripheral opening 1113 is in communication with the firstconduit 1211 and in communication with the inter-sheets passage 1212,the connecting member 13 includes the communication cavity 138, one endof the connecting member 13 is located in the first conduit 1211, thebottom opening 1115 is in communication with the communication cavity138, and the communication cavity 138 is not in direct communicationwith the first conduit 1211. The valve core member 11 may be a valvecore portion of an electronic expansion valve. As such, the fluid fromthe communication cavity 138 of the connecting member 13 can flow in theinter-sheets passage 1212 through the bottom opening 1115, the throttlehole 1114, the peripheral opening 1113 and the first conduit 1211, sothat the fluid can exchange heat with the fluid between adjacent sheetsinside the sheet portion 121. The peripheral opening 1113 may be indirect communication with the first conduit 1211, or may be in directcommunication with the inter-sheets passage 1212.

Herein, the communication cavity 138 is not in direct communication withthe first conduit 1211, which does not exclude a transfer communicationbetween the communication cavity 138 and the first conduit 1211 by aflow passage provided by other members.

The connecting member 13 includes an annular wall portion 131, the valveseat portion 111 is arranged sealed to the annular wall portion 131, andthe sealing form may be a radial sealing or an axial sealing.

The valve seat portion 111 includes a bottom section 1111 and a middlesection 1112, the bottom section 1111 includes the bottom opening 1115,the bottom section 1111 is located inside the connecting member 13, anda peripheral side of the bottom section 1111 is arranged sealed to theannular wall portion 131 of the connecting member 13. The middle section1112 includes the peripheral opening 1113, the middle section 1112 isrelatively closer to the first side portion 124 of the core body member12 than the bottom section 1111 in a stacking direction of the core bodymember 12, the middle section 1112 is located in the sheet portion 121,and the peripheral opening 1113 is in communication with the firstconduit. As such, the depth which the valve core member 11 is assembledto the core body member 12 is relatively great, which is beneficial toreducing a height of the valve core member 11 protruding from the corebody member 12, and the overall structure is more compact. When thevalve core member 11 is in an open state, the communication passage 103,the communication cavity 138, the bottom opening 1115, the throttle hole1114, the peripheral opening 1113, the first conduit 1211, theinter-sheets passage 1212 and the second conduit 1213 are incommunication.

It should be noted that the bottom section and the middle section hereinare merely defined literally, and are not limited to their structures.

The connecting member 13 includes a valve seat matching portion 132 anda drainage pipe 133, the valve seat matching portion 132 is arrangedfixed to the valve seat portion 133, such as by welding or other fixingmethods such as by riveting. The valve seat matching portion 132 isprovided with the annular wall portion 131, and a height of the annularwall portion 131 is greater than a height of the bottom section 1111along the stacking direction of the sheets of the core body member 12. Afirst groove 1116 is provided in the bottom section 1111, the heatexchange apparatus 1 includes a first sealing member 14, which islocated in the first groove 1116, and closely abuts against the annularwall portion 131 to realize sealing between the first sealing member 14and the annular wall portion 131, which effectively avoids the leakagebetween the bottom section 1111 and the annular wall portion 131.

The valve seat matching portion 132 includes a side hole 1321, and theside hole 1321 is relatively closer to the first side portion 124 of thecore body member 12 than the annular wall portion along the stackingdirection of the sheets of the core body member 12. The side hole 1321corresponds to the peripheral opening 1113 of the valve core member 11.As such, the fluid flows in from the bottom opening 1115 of the valvecore member 11 through the drainage pipe 133, and flows in the firstconduit 1211 through the throttle hole 1114, the peripheral opening 1113and the side hole 1321, and then flows in the inter-sheets passage 1212in communication with the first conduit 1211 to exchange heat with thefluid in the second flow passage. The throttling and depressurization ofthe refrigerant are conducted inside the core body member 12, and thelink with the subsequent heat exchange process is smooth, which reducesthe influences of factors such as gas-liquid stratification of therefrigerant after throttling and depressurization in a long pipeline tothe heat exchange efficiency of the subsequent heat exchange by thepipeline arrangement.

The connecting member 13 is fixed to the core body member 12 by welding,the core body member 12 includes a welding matching portion 125, whichis fixed to an outer wall of the connecting member 13 by welding, and athickness of the welding matching portion 125 is greater than athickness of at least two stacked sheets along an extending direction ofthe first conduit 1211. As such, during the welding shrinkage process ofthe core body member 12, since the welding matching portion 125 has thethickness greater than two stacked sheets, the connecting member 13 canbe well welded to the welding matching portion 125 during welding, whichis beneficial to the stability of sealing.

The valve seat matching portion 132 includes a flange portion 1322, andthe flange portion 1322 is fixed to the core body member 12 by welding.The sheets of the core body member 12 include a first sheet 1214 a and asecond sheet 1215 a, the first sheet 1214 a is fixed to the second sheet1215 a by welding, a top or a bottom of the flange portion 1322 is fixedto the first sheet 1214 a by welding; or the top or the bottom of theflange portion 1322 is fixed to the second sheet 1215 a by welding.

The core body member 12 includes a top pressing block 122, the flangeportion 1322 is fixed to the top pressing block 122 by welding, and thevalve seat portion 111 of the valve core member 11 protrudes in from thethird hole 1221 of the top pressing block 122. The valve seat matchingportion 132 and the sheet portion 121 are fixed and limited by theflange portion 1322. The flange portion 1322 is fixed to the toppressing block 122 of the core body member 12 when the sheet portion 121shrinks during welding, and thus it can ensure the certainty of aposition of the valve seat matching portion 132 in the core body member12, and reduce the risk of affecting the position of the valve seatmatching portion 132 after the sheets shrink and reduce the risk offluid leakage between the valve seat matching portion 132 and the valveseat.

The core body member 12 includes the bottom pressing block 123, part ofthe connecting member 13 protrudes into the bottom pressing block 123,the bottom pressing block 123 includes the welding matching portion 125,the welding matching portion 125 includes a welding section 1352, whichis fixed to the bottom pressing block 123 by welding, the connectingmember 13 includes a firs end portion 134, and the first end portion 134is welded to the core body member 12 by welding. As such, the connectingmember 13 can be fixed to the core body member by welding during thewelding of the core body member, and the welding can be completed at onetime, and the processing is convenient.

The valve seat matching portion 132 includes a bottom end portion 1328,the drainage pipe 133 is fixed to the bottom end portion 1328 bywelding, and at least part of the drainage pipe 133 protrudes into thevalve seat matching portion 132; the drainage pipe 133 includes a firstportion 1331 and a second portion 1332, at least part of the firstportion 1331 protrudes into the valve seat matching portion 132, and theat least part of the first portion 1331 is fixed to the valve seatmatching portion 132 by welding. The second end portion of theconnecting member 13 is arranged in the second portion 1332 of thedrainage pipe 133, and part of the second portion 1332 of the drainagepipe 133 is located in the welding matching portion 125 and is fixed tothe welding matching portion 125 by welding.

The bottom pressing block 123 includes a protrusion 1232, the protrusion1232 protrudes into the first conduit 1211, the protrusion 1232 includesthe communication hole 1231 which is in communication with thecommunication cavity 138, the welding matching portion 125 is arrangedin an inner wall of the protrusion 1232, the second portion 1332protrudes into the communication hole 1231 of the protrusion 1232, andan outer wall of the protrusion 1232 is fixed to the sheet portion 121by welding.

The drainage pipe 133 includes an external expansion portion 1333, theexternal expansion portion 1333 does not protrude into the valve seatmatching portion 132 and the valve seat matching portion 132 isrelatively closer to the bottom section 1111 than the external expansionportion 1333 along a stacking direction of the core body member, and theexternal expansion portion 1333 is matched with the bottom end portion1328 of the valve seat matching portion 132 for limiting. As such, sincethe sheet portion 121 shrinks during the welding of the core body member12, by providing the external expansion portion 1333, the drainage pipe133 will be blocked by the external expansion portion 1333 and thebottom end portion of the valve seat matching portion 132 in case thatthe drainage pipe 133 moves upward toward the valve seat matchingportion 132, so that a position of the drainage pipe 133 protruding intothe valve seat matching portion 132 is determined, which reduces therisk of sealing fit between the bottom section 1111 and the connectingmember 13 caused by the excessive depth of the drainage pipe 133protruding into the valve seat matching portion 132, and reduces theinfluence on the flow passage between the bottom section 1111 and thedrainage pipe 133.

Furthermore, the flange portion 1322 includes a limiting groove 1323,the first sheet 1214 a includes a limiting protrusion (not shown), andthe limiting groove 1323 is matched with the limiting protrusion toprevent the connecting member 13 from moving in a circumferentialdirection, which is beneficial to the stability of the structure and thestability of the sealing.

Referring to FIG. 4 and FIG. 5 , which are schematic structural views ofa heat exchange apparatus 2, although some reference numerals in FIG. 4are not indicated below, the reference numerals of the same parts in theabove embodiment are also marked in FIG. 4 to facilitate understandingand avoid repetition and redundancy. Similar processing is formed insubsequent embodiments. The similarities with the embodiment shown inFIGS. 1 to 3 will not be described again, and the differences will bedescribed below.

At least part of the valve core member 11 protrudes into the firstconduit 1211, and at least part of the connecting member 13 protrudesinto the first conduit 1211.

The core body member 12 includes a third sheet 1214 b and a fourth sheet1215 b, the third sheet 1214 b is fixed to the fourth sheet 1215 b bywelding, the third sheet 1214 b includes a first annular protrudingportion 1219 a, the fourth sheet 1215 b includes a second annularprotruding portion 1219 b, a first hole is provided in the first annularprotruding portion 1219 a, the first hole is provided in the secondannular protruding portion 1219 b, the first conduit 1211 extendsthrough the first annular protruding portion 1219 a and the secondannular protruding portion 1219 b, the first annular protruding portion1219 a protrudes into the first hole of a sheet adjacent to the thirdsheet 1214 b, the second annular protruding portion 1219 b protrudesinto the first hole of a sheet adjacent to the fourth sheet 1215 b, agap is provided between the first annular protruding portion 1219 a anda wall portion of the first hole provided in the sheet adjacent to thethird sheet 1214 b, and a gap is provided between the second annularprotruding portion 1219 b and a wall portion of the first hole providedin the sheet adjacent to the fourth sheet 1215 b. As such, the fluid canflow through an outer periphery of the first annular protruding portion1219 a and flow in the inter-sheets passage 1212 for heat exchange.

At least part of the valve seat portion 111 protrudes into the firstannular protruding portion 1219 a, and the bottom section 1111 isarranged sealed to the annular protruding portion 1219 a; the firstgroove 1116 is provided in the bottom section 1111, the heat exchangeapparatus 1 includes a first sealing member 14, which is located in thefirst groove 1116 and is closely matched with the annular protrudingportion 1219 a to realize sealing between the first sealing member 14and the annular protruding portion 1219 a, which effectively avoids theleakage between the bottom section 1111 and the annular protrudingportion 1219 a.

Providing that the side of the core body member 12, which is arrangedwith the valve core member 11, is taken as an upper side, the middlesection 1112 is located above the connecting member 13. The fluid flowsin from the bottom opening 1115, and flows out from the peripheralopening 1113 after flowing through the throttle hole 1114, so that thefluid that has just flowed in the core body member 12 flows out from theperipheral opening 1113 after being throttled and depressurized by theexpansion valve, and flows in the inter-sheets passage 1212 to exchangeheat with the fluid in the second flow passage. The throttling anddepressurization of the refrigerant are conducted inside the core bodymember 12, and the link with the subsequent heat exchange process issmooth, which reduces the influences of factors such as gas-liquidstratification of the refrigerant after throttling and depressurizationin a long pipeline to the heat exchange efficiency of the subsequentheat exchange by the pipeline arrangement.

The connecting member 13 includes a first end portion 134 and a secondend portion 135, and at least part of the first end portion 134 is fixedto the second annular protruding portion 1219 b by welding.Specifically, at least part of the first end portion 134 protrudes intothe second annular protruding portion 1219 b, and at least part of anouter wall of the first end portion 134 is fixed to an inner wall of thesecond annular protruding portion 1219 b by welding. For example, awelding ring may be provided during welding.

At least part of the second end portion 135 is fixed to the bottompressing block 123 by welding, and the at least part of the second endportion 135 protrudes into a position of the bottom pressing block 123provided with the first hole.

The first end portion 134 includes a first section 1341 and a secondsection 1342, the first section 1341 protrudes into the second annularprotruding portion 1219 b, the second section 1342 does not protrudeinto the second annular protruding portion 1219 b, an outer diameter ofthe second section 1342 is greater than an outer diameter of the firstsection 1341, and the outer diameter of the second section 1342 isgreater than an inner diameter of the second annular protruding portion1219 b, for example, the outer diameter of the second section 1342 maybe tapered toward the first section 1341. As such, the sheet may shrinkwhen the stacked sheets are fed into a furnace for welding, whichresults in a reduction in height of the stacked core body member 12. Atthis time, the first end portion 134 of the connecting member isdifficult to protrude into the bottom opening 1115 of the bottom section1111 during the shrinkage of the sheets by providing the second section1342, which reduces the influence on the bottom section 1111 by thechange in height caused by shrinkage of the connecting member 13 duringthe welding of the core body member 12, and is beneficial to improvingthe matching between the valve core member 11 and the core body member12 and improving the sealing between the valve core member 11 and thecore body member 12.

The second end portion 135 of the connecting member 13 includes awelding section 1352 and an adjacent section 1351, the welding section1352 is welded to the welding matching portion 125, the adjacent section1351 is adjacent to the welding section 1352, the adjacent section 1351is relatively closer to the first end portion 134 than the weldingsection 1352, an outer diameter of the welding section 1352 is smallerthan or equal to an inner diameter of the welding matching portion 125,and an outer diameter of the adjacent section 1351 is smaller than orequal to the inner diameter of the welding matching portion 125. In acase that the core body member shrinks during the welding, since theconnecting member has the welding section and the adjacent section, adistance between an end, away from the valve core member 11, of thewelding matching portion 125 and an end, away from the valve core member11, of the welding section 1352 is larger than or equal to zero, thewelding matching portion 125 is movable relative to the connectingmember 13 during the welding shrinkage of the core body member 12, andthe welding between the connecting member 13 and the core body member 12has good sealing performance. In addition, the outer diameter of theadjacent section 1351 may be further greater than or equal to the outerdiameter of the welding section 1352, and the diameter of the weldingsection 1352 can be tapered relative to the adjacent section 1351, whichis more beneficial to the movement of the sheet portion relative to theconnecting member 13 during the welding.

The welding section 1352 may include a first zone section and a secondzone section, the first zone section is welded to the welding matchingportion 125, the second zone section is adjacent to the first zonesection, the second zone section is farther away from the first endportion than the first zone section, and an outer diameter of the secondzone section is smaller than or equal to an inner diameter of the firstzone section; the first zone section may not be arranged correspondingto the welding matching portion 125 when the connecting member 13 isassembled into the core body member 12, and the first zone section ismoved to the welding matching portion 125 and is fixed to the weldingmatching portion 125 by welding when the core body member shrinks.

Referring to FIG. 6 and FIG. 7 , which are schematic cross-sectionalviews of another heat exchange apparatus, the similarities with theembodiment shown in FIGS. 1 to 3 will not be described again, and thedifferences will be described below.

Providing that a side of the core body member 11, which is arranged withthe valve core member 12, is taken as an upper side, the middle section1112 is located above the connecting member 13.

The connecting member 13 includes the first end portion 134 and thesecond end portion 135, the first end portion 134 is arranged matchedwith the bottom section 1111, the first end of the connecting member islocated in the first conduit, the bottom section 1111 includes the firstgroove 1116, the heat exchange apparatus includes the first sealingmember 14, which is located between the first end portion of theconnecting member and the valve core member and located in the firstgroove 1116. The first sealing member 14 is closely matched with theannular wall portion 131 of the connecting member 13 to realize sealingbetween the first sealing member 14 and the annular wall portion 131,which effectively avoids the leakage between the bottom section 1111 andthe connecting member 13.

The bottom section 1111 includes a second groove 1117, which is closerto the peripheral opening 1113 than the first groove 1116. The first endportion 134 is arranged matched with the bottom section 1111, the firstend portion 134 includes a limiting groove 136, and a position of thelimiting groove 136 is arranged opposite to the second groove 1117. Theheat exchange apparatus includes a limiting member 16, such as aretaining ring, a part of the retaining ring is located in the secondgroove 1117, another part of the retaining ring is located in thelimiting groove 136, and the valve core member 11 and the connectingmember 13 are fixed and limited by the retaining ring.

The second end portion 135 is arranged fixed to the bottom pressingblock 123, the second end portion 135 includes a groove portion 1353,the heat exchange apparatus includes a second sealing member 15, thegroove portion 1353 is configured to accommodate the second sealingmember 15, and the second end portion 135 is arranged sealed to thebottom pressing block 123.

A manufacturing method for the heat exchange apparatus shown in FIG. 6and FIG. 7 are provided according to the embodiment of the presentdisclosure, which includes:

provide the sheet portion 121, and put the stacked sheet portion 121into a furnace for welding, in which the welded sheet portion 121includes the first conduit 1211, the second conduit 1213 and theinter-sheets passage 1212;

provide the valve core member 11 and the connecting member 13, protrudethe valve seat portion 111 of the valve core member 11 into the firstconduit 1211 of the welded sheet portion 121, in which the valve seatportion 111 includes the bottom section 1111 and the middle section1112, the middle section 1112 is provided with a peripheral opening1113; protrude part of the bottom section 1111 into the connectingmember 13, seal the bottom section 1111 with the connecting member 13 byproviding the first sealing member 14; and assemble and fix the valvecore member 11 and the core body member 12.

Furthermore, the manufacturing method further includes: provide thebottom pressing block 123, put the stacked sheet portion 121 and thebottom pressing block 123 into the furnace for welding; align thecommunication hole 1231 of the bottom pressing block 123 with the firstconduit 1211;

assemble and fix the valve seat portion 111 and the connecting member13; in which the assembling and fixing the valve seat portion 111 andthe connecting member 13 can specifically include: put the first sealingmember 14 into the first groove 1116 of the bottom section 1111, insertthe valve core member 11 with the first sealing member 14 into theconnecting member 13, align the second groove 1117 of the bottom section1111 with the limiting groove 136 of the connecting member 13, and putthe limiting member 16, such as a retaining ring, into the second groove1117 and the limiting groove 136 to limit and fix the valve seat portion111 and the connecting member 13;

and protrude the assembled connecting member 13 and the assembled valvecore member 11 from a side of the sheet portion 121 not welded to thebottom pressing block 123 into the first conduit 1211, protrude part ofthe connecting member 13 into the first conduit 1211, protrude anotherpart of the connecting member 1211 into the bottom pressing blocking123, and seal the connecting member 13 with the bottom pressing block123 by providing the second sealing member 15; finally, assemble and fixthe valve core member 11 and the core body member 12 to complete themanufacture of the heat exchange apparatus.

Through the manufacturing method, the connecting member 13 can be fixedto the core body member 12 by assembly, and the assembly process of theconnecting member 13 and the valve core member 11 is configured to beafter the welding of the core body member 12, which reduces theinfluence of various uncertain factors during the welding of the corebody member 12 on the sealing between the connecting member 13 and thecore body member 12, the process is simple and the manufacturing methodis simple.

Referring to FIG. 8 , it shows a matching mode of the valve core member11, the connecting member 13 and the bottom pressing block 123, in whicha structure of the sheet portion of the core body member 12 is omitted.In order to show the structure more clearly, some reference numerals ofthe following structures may not be shown in FIG. 8 , which can makereference to FIG. 2 .

In this embodiment, the middle section 1112 is located in the firstconduit 1211, so that a depth of the valve core member 11 assembled intothe core body member 12 is relatively great, which is beneficial toreducing a height of the valve core member 11 protruding from the corebody member 12, and the overall structure is more compact.

The connecting member 13 includes the first end portion 134 and thesecond end portion 135, at least part of the bottom section 1111protrudes into the first end portion 134, the bottom section 1111includes an external threaded portion 1119, the connecting member 13includes an internal threaded portion 1326, the bottom section 1111 isthreaded with the connecting member 13; the bottom section 1111 includesa protruding portion 1118, and the protruding portion 1118 protrudesrelative to the internal threaded portion 1326 along a radial directionof the valve core member 11. The heat exchange apparatus includes thefirst sealing member 14, which is located between the protruding portion1118 and the first end portion 134. Herein, a part of the first endportion 134 for receiving a portion that the bottom section 1111protrudes is configured as an annular wall portion, and the bottomsection 1111 performs axial sealing by the protruding portion 1118 andthe annular wall portion.

Furthermore, the connecting member 13 includes a valve seat matchingportion 132 and a drainage pipe 133, the valve seat matching portion 132includes a first section 1324 and a second section 1325, the firstsection 1324 is arranged matched with the valve core member 11, thefirst section 1324 of the valve seat matching portion 132 is providedwith the internal threaded portion 1326, the bottom section 1111 isprovided with the external threaded portion 1119, and the valve coremember 11 is threaded with the valve seat matching portion 132. Thebottom section 1111 includes the protruding portion 1118, and theprotruding portion 1118 protrudes relative to the internal threadedportion 1326 along the radial direction of the valve core member 11. Thefirst sealing member 14 is located between the protruding portion 1118and the valve seat matching portion 132.

The second section 1325 of the valve seat matching portion 132 isarranged matched with the drainage pipe 133. The drainage pipe 133protrudes into the second section 1325, an outer wall of the drainagepipe 133 is fixed to an inner wall of the second section 1325 of thevalve seat matching portion 132, and the drainage pipe 133 can be weldedto the valve seat matching portion 132 by a soldering flake.

The valve seat matching portion 132 includes a limiting protrusion 1327,and an end of the drainage pipe 133 is arranged opposite to the limitingprotrusion 1327. The limiting protrusion 1327 is configured to limit adepth of the drainage pipe 133 protruding into the valve seat matchingportion 132, and ensure that the protruding depth of the drainage pipe133 does not exceed the limiting protrusion 1327 when the core bodymember 12 shrinks during welding, which is beneficial to the sealing fitand the connection of flow passages between the bottom section 1111 andthe valve seat matching portion 132.

As other methods, positions of the drainage pipe 133 and the secondsection 1325 of the valve seat matching portion 132 can be fixed byscrew connection.

The manufacturing method shown in FIG. 8 is provided according to theembodiment of the present disclosure, which includes:

provide the sheet portion 121, and put the stacked sheet portion 121into a furnace for welding, in which the welded sheet portion 121includes the first conduit 1211, the second conduit 1213 and theinter-sheets passage 1212;

provide the valve core member 11 and the connecting member 13, protrudethe valve seat portion 111 of the valve core member 11 into the firstconduit 1211 of the welded sheet portion 121, in which the valve seatportion 111 includes the bottom section 1111 and the middle section 1112and the middle section 1112 includes the peripheral opening; protrudepart of the bottom section 1111 into the connecting member 13, seal thebottom section 1111 with the connecting member 13 by providing the firstsealing member 14; and assemble and fix the valve core member 11 and thecore body member 12.

Furthermore, the manufacturing method further includes: provide thebottom pressing block 123, put the stacked sheet portion 121 and thebottom pressing block 123 into the furnace for welding; align thecommunication hole 1231 of the bottom pressing block 123 with the firstconduit 1211;

assemble and fixed the valve seat portion 111 and the connecting member13; in which the assembling and fixing the valve seat portion 111 andthe connecting member 13 can specifically include: put the first sealingmember 14 between the valve seat portion 111 and the connecting member13, insert the part of the valve core member 11 into the connectingmember 13, in which the bottom section 1111 is provided with theexternal threaded portion 1119, and an inner wall of the connectingmember 13 is provided with the internal threaded portion 1326;threadedly connect the bottom section 1111 with the connecting member13, and obtain the sealing between the bottom section 1111 and theconnecting member 13 by the first sealing member 14 at the end of theconnecting member 13; and

protrude the assembled connecting member 13 and the assembled valve coremember 11 from a side of the sheet portion 121 that is not welded to thebottom pressing block 123 into the first conduit 1211, protrude a partof the connecting member 13 into the first conduit 1211, protrudeanother part of the connecting member 1211 into the bottom pressingblocking 123, and sealingly connect the connecting member 13 with thebottom pressing block 123 by providing the second sealing member 15.Finally, assemble and fix the valve core member 11 and the core bodymember 12, to complete the manufacture of the heat exchange apparatus.

Through the manufacturing method, the connecting member 13 can be fixedto the core body member 12 by assembly, and the assembly process of theconnecting member 13 and the valve core member 11 is configured to beafter the welding of the core body member 12, which reduces theinfluence of various uncertain factors during the welding of the corebody member 12 on the sealing between the connecting member 13 and thecore body member 12, the process is simple and the manufacturing methodis simple.

Referring to FIG. 9 , it shows a matching mode of the valve core member11, the connecting member 13 and the bottom pressing block 123, in whichthe structure of the sheet portion of the core body member 12 isomitted. In order to show the structure more clearly, some referencenumerals of the following structures may not be shown in FIG. 9 , whichcan make reference to FIG. 2 .

The connecting member 13 includes an annular wall portion 131, thebottom section 1111 protrudes into the connecting member 13, and thebottom section 1111 is arranged sealed to the annular wall portion 131.The heat exchange apparatus includes the bottom pressing block 123,which is fixed to the sheet portion 121 by welding. The bottom pressingblock 123 includes a communication hole 1231 and a protrusion 1232, atleast part of the protrusion 1232 protrudes into the first conduit 1211,the second end portion 135 of the connecting member 13 is located in thecommunication hole 1231 of the bottom pressing block 123, at least partof the second end portion 135 is fixed to the bottom pressing block 123by welding. The second end portion 135 includes a flared portion 1354,which is arranged to limit the bottom pressing block 123, for example,by riveting.

Referring to FIG. 10 , it is a schematic cross-sectional view of theheat exchange apparatus. In order to show the structure more clearly,some reference numerals of the following structures may not be shown inFIG. 10 , which can make reference to FIG. 2 and FIG. 3 .

The connecting member 13 includes the annular wall portion 131, and thevalve seat portion 111 is arranged sealed to the annular wall portion131. The height of the annular wall portion 131 is greater than theheight of the bottom section 1111 along the stacking direction of thesheets of the core body member 12. The first groove 1116 is provided inthe bottom section 1111, the heat exchange apparatus includes the firstsealing member 14, the first sealing member 14 is located in the firstgroove 1116, and the first sealing member 14 is closely matched with theannular wall portion 131 to realize sealing between the first sealingmember 14 and the annular wall portion 131, which effectively avoids theleakage between the bottom section 1111 and the annular wall portion131.

The connecting member 13 includes the side hole 1321, and the side hole1321 is closer to the first side portion 124 of the core body member 12than the annular wall portion 131 along the stacking direction of sheetsof the core body member 12. The side hole 1321 corresponds to theperipheral opening 1113 of the valve core member 11. As such, the fluidflows in from the bottom opening 1115 of the valve core member 11through the drainage pipe 133, flows in the first conduit 1211 throughthe throttle hole 1114, the peripheral opening 1113 and the side hole1321, and then flows in the inter-sheets passage 1212 in communicationwith the first conduit 1211 to exchange heat with the fluid in thesecond flow passage.

The connecting member 13 includes the flange portion 1322, and theflange portion 1322 is fixed to the core body member 12 by welding. Thesheets of the core body member 12 include the first sheet 1214 a and thesecond sheet 1215 a, the first sheet 1214 a is fixed to the second sheet1215 a by welding, the top or the bottom of the flange portion 1322 isfixed to the first sheet 1214 a by welding; or the top or the bottom ofthe flange portion 1322 is fixed to the second sheet 1215 a by welding.

The core body member 12 includes the top pressing block 122, and theflange portion 1322 is fixed to the top pressing block 122 by welding.The valve seat matching portion 132 and the sheet portion 121 are fixedand limited by the flange portion 1322. The flange portion 1322 is fixedto the top pressing block 122 of the core body member 12 by weldingduring the welding shrinkage of the sheet portion 121, which can ensurethe certainty of the position of the connecting member 13 in the corebody member 12, and reduce the risk of affecting the position of theconnecting member 13 after the sheets shrink and reduce the risk offluid leakage between the connecting member 13 and the valve seatportion 111.

The core body member 12 includes the bottom pressing block 123, part ofthe connecting member 13 protrudes into the bottom pressing block 123,the bottom pressing block 123 includes the welding matching portion 125,the second end portion 135 protrudes into the welding matching portion125, and the second end portion 135 is fixed to the bottom pressingblock 123 by welding.

The bottom pressing block 123 includes the communication hole 1231 whichis in communication with the first conduit 1211, the welding matchingportion 125 is arranged on an inner wall of the bottom pressing block123 provided with the bottom pressing block 123, the second end portion135 protrudes into the communication hole 1231, and a thickness of thebottom pressing block 123 is greater than a thickness of five sheets. Assuch, the bottom pressing block 123 can be welded to an outer wall ofthe connecting member 13 to ensure sealing during the welding of thecore body member 12.

The second end portion 135 of the connecting member 13 includes thewelding section 1352 and the adjacent section 1351, the welding section1352 of the connecting member 13 is welded to the welding matchingportion 125, the adjacent section 1351 is adjacent to the weldingsection 1352, the adjacent section 1351 is closer to the first endportion 134 than the welding section 1352, the outer diameter of thewelding section 1352 is less than or equal to the inner diameter of thewelding matching portion 125, and the outer diameter of the adjacentsection 1351 is less than or equal to the inner diameter of the weldingmatching portion 125. In a case that the core body member shrinks duringthe welding, since the connecting member has the welding section and theadjacent section, a distance between an end, away from the valve coremember, of the welding matching portion and an end, away from the valvecore member, of the welding section is larger than or equal to zero, thewelding matching portion is movable relative to the connecting memberduring the welding shrinkage of the core body member, and thus thewelding between the connecting member and the core body member has goodsealing performance. In addition, the outer diameter of the adjacentsection 1351 may be further greater than or equal to the outer diameterof the welding section 1352, and the diameter of the welding section1352 can be tapered relative to the adjacent section 1351, which is morebeneficial to the movement of the sheet portion relative to theconnecting member 13 during the welding.

Referring to FIG. 11 , it is a schematic cross-sectional view of anotherembodiment of the heat exchange apparatus. A general structure of theheat exchange apparatus can make reference to the heat exchangeapparatus shown in FIG. 10 .

The heat exchange apparatus includes a first blocking portion 1217, thefirst conduit 1211 is separated by the blocking portion 1217, the firstconduit 1211 includes a first sub conduit 1211 a located on one side ofthe first blocking portion 1217 and a second sub conduit 1211 b locatedon another side of the first blocking portion 1217, the peripheralopening 1113 is in communication with the first sub conduit 1211 a, andthe first sub conduit 1211 a is not in direct communication with thesecond sub conduit 1211 b.

The valve body member 12 includes a fifth sheet 1214 c, the fifth sheet1214 c includes the first blocking portion 1217, and the first blockingportion 1217 is fixed to the outer wall of the connecting member 13 bywelding. Providing that the side of the core body member 12 assembledwith the valve core member 11 is taken as an upper side, the firstblocking portion 1217 is located below the middle section 1112.

The bottom section 1111 is located in the connecting member 13, and thebottom section 1111 is arranged sealed to the connecting member 13.Providing that the side of the core body member arranged with the valvecore member is taken as the upper side along the extending direction ofthe first conduit, the first blocking portion 1217 is located below theperipheral opening 1113. As such, the arrangement of the first blockingportion 1217 has less interference with the fluid flowing out from theperipheral opening 1113.

The first conduit 1211 includes the first sub conduit 1211 a and thesecond sub conduit 1211 b, and the first blocking portion 1217 is fixedto the outer wall of the connecting member 13 by welding so as toseparate the first sub conduit 1211 a from the second sub conduit 1211b.

The valve body member 12 includes a sixth sheet 1215 c, the sixth sheet1215 c includes a second blocking portion 1218, the second blockingportion 1218 is located at the second conduit 1213, the second conduit1213 includes a third sub conduit 1213 a and a fourth sub conduit 1213b, and the second blocking portion 1218 separates the third sub conduit1213 a from the fourth sub conduit 1213 b.

The inter-sheets passage 1212 includes a first route 1212 a, a secondroute 1212 b and a third route 1212 c, a flow direction of the firstroute 1212 a is opposite to a flow direction of the second route 1212 b,and the flow direction of the second route 1212 b is opposite to a flowdirection of the third route 1212 c. As such, the fluid flows in fromthe bottom opening 1115 after flowing into the connecting member 13through the first communication passage 103, and then flows in the firstsub conduit 1211 a, the first route 1212 a, the third conduit 1213 a,the second route 1212 b, the second conduit 1211 b, the third route 1212c and the second communication passage 104 through the throttle hole1114 and the peripheral opening 1113. The throttling anddepressurization to the fluid can be conducted after flowing into theheat exchange apparatus, and the fluid flowing in the inter-sheetspassage 1212 from the peripheral opening 1113 can directly exchange heatwith the fluid in the adjacent inter-sheets passage 1212, and thethrottling and heat exchange can be completed inside the core bodymember 12, which is not only beneficial to the stability of phase stateof the fluid, but also beneficial to improving the heat exchangeefficiency.

Referring to FIG. 15 for another heat exchange apparatus. Merely thedifferences from the FIG. 11 are described here. The bottom pressingblock 123 includes a second communication passage 104, the secondcommunication passage 104 is not in direct communication with the firstcommunication passage 103, and the second communication passage 104 isin communication with the second sub conduit 1211 b.

The inter-sheets passage includes a first route and a second route, anda flow direction of the first route is opposite to a flow direction ofthe second route.

When the valve core member is in an open state, the communicationpassage 103, the communication cavity 138, the bottom opening 1115, thethrottle hole 1114, the peripheral opening 1113, the first sub conduit1211 a, the first route 1212 a, the second conduit 1213, the secondroute 1212 b, the second conduit 1211 b and the second communicationpassage 104 are in communication. In FIG. 15 , the first communicationpassage 103 and the second communication passage 104 are both formed atpositions of the bottom pressing block 123 corresponding to the firstconduit 1211, the first communication passage 103 shown in FIG. 11 isformed in the bottom pressing block 123 corresponding to the firstconduit 1211, and the second communication passage 104 is formed in thebottom pressing block 123 corresponding to the second conduit 1213.

Referring to FIG. 16 , which is a schematic cross-sectional view of aheat exchange apparatus 1.

A general structure of the heat exchange apparatus is similar to thestructure shown in FIG. 2 . The same reference numerals below representthe same or similar structures.

The heat exchange apparatus includes the first blocking portion 1217,the first conduit 1211 is separated by the blocking portion 1217, thefirst blocking portion 1217 shown in FIG. 16 is a hemming structurearranged at a rear end of the first end portion of the connecting member13, and the first blocking portion 1217 is located below the peripheralopening 1113. The first conduit 1211 includes the first sub conduit 1211a located on one side of the first blocking portion 1217 and the secondsub conduit 1211 b located on another side of the first blocking portion1217, the peripheral opening 1113 is in communication with the first subconduit 1211 a, and the first sub conduit 1211 a is not in directcommunication with the second sub conduit 1211 b.

The valve body member 12 includes the fifth sheet 1214 c, a firstblocking portion 1217 is formed by an extension of the connecting member13, and the first blocking portion 1217 extends along the radialdirection of the connecting member 13. The first blocking portion 1217is fixed to the fifth sheet 1214 c by welding.

The bottom section 1111 is located in the connecting member 13, and thebottom section 1111 is arranged sealed to the connecting member 13.Providing that the side of the core body member arranged with the valvecore member is taken as the upper side along the extending direction ofthe first conduit, the first blocking portion 1217 is located below theperipheral opening 1113. The connecting member 13 is arranged in thefirst conduit, and the connecting member 13 is located on the lower sideof the peripheral opening 1113, so that the interference of the fluidflowing out from the peripheral opening 1113 is small.

In addition, similar to FIG. 15 , a first communication passage 103 anda second communication passage 104 are both formed at positions of thebottom pressing block 123 in FIG. 16 corresponding to the first conduit1211.

It should be noted that, although the connecting member shown in thefigures has an integrated structure, the present disclosure alsoincludes a solution in which the connecting member has a separatestructure. For example, the connecting member may include two portionsfixed by a screw or by other position-limiting fit, or may include twoportions or three portions arranged by welding.

It should be understood that, the first blocking portion may beintegrally formed with the sheets or the connecting member, or may bewelded to the sheets or the connecting member.

In this embodiment, the second end portion 135 of the connecting member13 includes the welding section 1352 and the adjacent section 1351,which can specifically refer to the embodiment shown in FIG. 4 , andwill not be detailed described herein.

Along the extending direction of the first conduit, a thickness of thewelding matching portion is greater than a thickness of two stackedplates, or the thickness of the welding matching portion may be greaterthan the thickness of five stacked plates.

Referring to FIG. 12 , it is a schematic cross-sectional view of theheat exchange apparatus.

The connecting member 13 includes an annular wall portion 131, and thevalve seat portion 111 is arranged sealed to the annular wall portion131. The height of the annular wall portion 131 is greater than theheight of the bottom section 1111 along the stacking direction of thesheets of the core body member 12. The first groove 1116 is provided inthe bottom section 1111, the heat exchange apparatus includes a firstsealing member 14, the first sealing member 14 is located in the firstgroove 1116, and the first sealing member 14 is closely matched with theannular wall portion 131 to realize sealing between the first sealingmember 14 and the annular wall portion 131, which effectively avoids theleakage between the bottom section 1111 and the annular wall portion131.

In this embodiment, the connecting member 13 includes a flange portion137, and the flange portion 137 is arranged sealed to the core bodymember 12; the sheet portion 121 includes a protruding portion 1220, theprotruding portion 1220 protrudes away from the valve core member 11,and the protruding portion 1220 is arranged opposite to the bottompressing block 123. The flange portion 137 is located between the sheetportion 121 and the bottom pressing block 123. The flange portion 137 islocated between the sheet portion 121 and the bottom pressing block 123,which is not limited to that the flange portion 137 must be in contactwith the sheet portion 121 and bottom pressing block 123. Herein, itmerely means that the flange portion 137 is just located between apartial structure of the sheet portion 121 and a partial structure ofthe bottom pressing block 123. The protruding portion 1220 can positionthe bottom pressing block, which facilitates assembly.

The flange portion 137 is limited between the sheet portion 121 and thebottom pressing block 123, which can be configured to determine theposition of the connecting member 13 in the core body member 12 and tostabilize the sealing fit between the connecting member 13 and thebottom section 1111, so as to facilitate the assembly of the connectingmember 13 and the valve core member 11.

The heat exchange apparatus includes the second sealing member 15, suchas in the form of a sealing gasket. The second sealing member 15 islocated between the flange portion 137 and the sheet portion 121 and isconfigured to seal the first conduit 1211. The bottom pressing block 123includes a threaded hole 1233, the bottom pressing block 123 and thesheet portion 121 can be fixed by a screw inserted into the threadedhole, and the sealing between the flange portion 137 and the sheetportion 121 can be fixed and pressed by the screw. In addition, the heatexchange apparatus may be provided with a third sealing member betweenthe flange portion 137 and the bottom pressing block 123, so that thesealing between the connecting member 13 and the core body member 12 isrealized by axial sealing, which is beneficial to stabilizing thesealing of the heat exchange apparatus and has a simple processing.

Since the connecting member 13 is provided with sealing points at twoportions, the sealing between the connecting member 13 and the valveseat portion 111 is realized by arranging the sealing member in thegroove of the bottom section 1111, so that the radial sealing betweenthe bottom section 1111 and the inner wall of the connecting member 13is realized. In that case, the inner wall of the connecting member 13has certain roughness requirement, and additional processing is requiredon the inner wall of the connecting member 13 to ensure the matchingrequired for sealing.

At the other sealing point of the connecting member 13, the axialsealing between the flange portion 137 and the sheet portion 121 isrealized by pressing the bottom pressing block 123 against the flangeportion 137. Since a sealing member is provided between the flangeportion 137 and the sheet portion 121, the flange portion 137 and thesheet portion 121 are sealed axially. In that case, the roughnessrequirement of a matching portion between the flange portion 137 and thesheet portion 121 is lower than the roughness requirement required forthe radial sealing. Therefore, for the processing of the connectingmember 13, the key point is mainly on the matching between the innerwall of the connecting member 13 and the bottom section 1111, and thusthe processing considerations are less, and the processing is simple andeasy to realize.

Referring to FIG. 13 , which simply shows a matching mode of theconnecting member 13 and the core body member 12. In order to show thestructure more clearly, some reference numerals of the followingstructures may not be shown in FIG. 13 , which can make reference toFIG. 12 . The matching mode between the connecting member 13 and thebottom section 1111 can refer to FIG. 12 . The connecting member 13includes the flange portion 137, and the flange portion 137 is arrangedsealed to the core body member 12; the flange portion 137 includes anupper portion 137 a and a lower portion 137 b. Providing that adirection of a side of the core body member 12 assembled with the valvecore member 11 is taken as above, a direction of another side of thecore body member 12 is taken as a lower side. The upper portion 137 a ofthe flange portion 1322 is fixed to one sheet of the sheet portion 121by welding, and the lower portion 137 b of the flange portion 1322 isfixed to another sheet of the sheet portion 121.

In other embodiments, the core body member 12 includes the bottompressing block 123, the lower portion 137 b of the flange portion 137may be fixed to the bottom pressing block 123 by welding, which is shownin FIG. 12 and FIG. 13 . As such, the fluid flows into the first conduit1211 through the communication cavity 138 of the connecting member 13,the bottom opening 1115, the throttle opening 1114 and the peripheralopening 1113 after it flows in from the communication passage 103 so asto exchange heat with the fluid in the adjacent inter-sheets passage1212.

A manufacturing method for the heat exchange apparatus shown in FIG. 12is provided according to the embodiment of the present disclosure, whichincludes:

-   -   provide a sheet portion 121, and put the stacked sheet portion        121 into a furnace for welding, in which the welded sheet        portion 121 includes a first conduit 1211, a second conduit 1213        and an inter-sheets passage 1212;    -   provide a valve core member 11 and a connecting member 13,        protrude a valve seat portion 111 of the valve core member 11        into the first conduit 1211 of the welded sheet portion 121, in        which the valve seat portion 111 includes the bottom section        1111 and the middle section 1112 and the middle section 1112        includes the peripheral opening; protrude part of the bottom        section 1111 into the connecting member 13, sealingly connect        the bottom section 1111 with the connecting member 13 by        providing the first sealing member 14; and    -   assemble and fix the valve core member 11 and the core body        member 12.

Furthermore, the manufacturing method further includes: provide a bottompressing block 123, protrude part of the connecting member 13 into thefirst conduit 1211, arrange the flange portion 137 of the connectingmember 13 between the bottom pressing block 123 and the sheet portion121, and sealingly connect the connecting member 13 with the sheetportion 121 by the sealing member;

-   -   assemble and fix the bottom pressing block 123, the connecting        member 13 and the sheet portion 121; and    -   protrude the valve seat portion 111 of the valve core member 11        from a side opposite to the side of the core body member 11        assembled with and fixed to the connecting member 13 into the        first conduit 1211 of the welded sheet portion 121, in which the        valve seat portion 111 includes the bottom section 1111 and the        middle section 1112, and the middle section 1112 includes the        peripheral opening; protrude the bottom section 1111 into the        connecting member 13, and sealingly connect the bottom section        1111 with the connecting member 13 by providing the first        sealing member 14.

Through the manufacturing method, it does not need to weld theconnecting member 13 to the core body member 12, and the assemblyprocess of the connecting member 13 and the valve core member 12 isarranged after the welding of the core body member 12, which reduces theinfluence of various uncertain factors during the welding of the corebody member 12 on the sealing between the connecting member 13 and thecore body member 12, the process is simple and the manufacturing methodis simple.

Referring to FIG. 14 , it is a schematic partial cross-sectional view ofanother heat exchange apparatus. In order to show the structure moreclearly, some reference numerals of the following structures may not beshown in FIG. 14 , which can make reference to FIG. 12 . The matchingmode between the connecting member 13 and the bottom section 1111 canrefer to FIG. 12 .

The core body member 12 includes the bottom pressing block 123, and thebottom pressing block 123 is fixed to the sheet portion 121 by welding.The connecting member 13 includes the first end portion 134 and thesecond end portion 135, the first end portion 134 of the connectingmember 13 is arranged sealed to the bottom section 1111 (referring toFIG. 12 ), the second end portion 135 of the connecting member 13protrudes into the bottom pressing block 123, the second end portion 135of the connecting member 13 includes the second groove 1117, the heatexchange apparatus includes the second sealing member 15, and the secondsealing member 15 is arranged in the second groove 1117 so as to sealthe outer wall of the connecting member 13 to the inner wall of thebottom pressing block 123.

It should be noted that the above embodiments are only used toillustrate the present application rather than limit the technicalsolutions described in the present application, for example, thedefinition of directionality such as “front”, “rear”, “left”, “right”,“up” and “down”. Although the present application has been described indetail herein with reference to the above embodiments, those of ordinaryskill in the art should understand that the present application maystill be combined, modified or equivalently replaced by those skilled inthe art, and all technical solutions and its improvements that do notdepart from the spirit and scope of the present application should becovered by the scope of the claims of the present application.

What is claimed is:
 1. A heat exchange apparatus, comprising a valvecore member and a core body member, wherein the valve core member isarranged fixed to the core body member; the core body member comprises asheet portion, the sheet portion comprises at least a first conduit, asecond conduit and an inter-sheets passage, the first conduit, theinter-sheets passage and the second conduit are in communication; thevalve core member comprises a valve seat portion, the valve seat portioncomprises a bottom section and a middle section, the bottom sectioncomprises a bottom opening, the middle section comprises a peripheralopening, the valve seat portion comprises a throttle hole, theperipheral opening is in communication with the bottom opening throughthe throttle hole, the middle section and the bottom section are locatedin the first conduit, and the peripheral opening is in communicationwith the first conduit; the heat exchange apparatus comprises aconnecting member, the connecting member comprises a communicationcavity, the connecting member comprises a first end portion, the firstend portion of the connecting member is located in the first conduit,the bottom opening of the bottom section is in communication with thecommunication cavity; and the core body member comprises a first sideportion and a second side portion, at least part of the valve coremember is located on a side where the first side portion is located, theheat exchange apparatus comprises a communication passage, thecommunication passage is located on a side where the second side portionis located, and the communication passage is in communication with thecommunication cavity.
 2. The heat exchange apparatus according to claim1, wherein the middle section is closer to the first side portion thanthe bottom section along a stacking direction of the core body member,the bottom section is located in the connecting member, the connectingmember comprises an annular wall portion, and the bottom section isarranged sealed to the annular wall portion; and when the valve coremember is in an open state, the communication passage, the communicationcavity, the bottom opening, the throttle hole, the peripheral opening,the first conduit, the inter-sheets passage and the second conduit arein communication.
 3. The heat exchange apparatus according to claim 2,wherein the connecting member comprise a valve seat matching portion,the valve seat matching portion comprises a flange portion, the flangeportion is fixed to the core body member by welding; the middle sectionprotrudes into the valve seat matching portion, a side holecorresponding to the peripheral opening is provided in the valve seatmatching portion; the side hole is closer to the first side portion ofthe core body member than the annular wall portion along the stackingdirection of sheets of the core body member; and a height of the annularwall portion is greater than a height of the bottom section.
 4. The heatexchange apparatus according to claim 3, wherein the connecting membercomprises a drainage pipe, the valve seat matching portion comprises theannular wall portion, the bottom section comprises a first groove, afirst sealing member of the heat exchange apparatus is located in thefirst groove, and the first sealing member is arranged abutting againstthe annular wall portion; the valve seat matching portion comprises abottom end portion, the drainage pipe is fixed to the bottom end portionby welding, and at least part of the drainage pipe protrudes into thevalve seat matching portion; the drainage pipe comprises an externalexpansion portion, the valve seat matching portion is closer to thebottom section than the external expansion portion along the stackingdirection of the core body member and the external expansion portion ismatched with the bottom end portion of the valve seat matching portionto be limited.
 5. The heat exchange apparatus according to claim 3,wherein the sheet portion comprises a first sheet and a second plate,the first sheet is fixed to the second sheet by welding, and a top or abottom of the flange portion is fixed to the first sheet by welding; orthe top or the bottom of the flange portion is fixed to the second sheetby welding; and/or the core body member comprises a top pressing block,and the flange portion is fixed to the top pressing block by welding. 6.The heat exchange apparatus according to claim 2, wherein the middlesection is located below the connecting member providing that a side ofthe core body member is arranged with the valve core member is taken asan upper side; the connecting member comprises a drainage pipe, thebottom section comprises a first groove and a second groove, a firstsealing member of the heat exchange apparatus is located in the firstgroove, the first sealing member is arranged abutting against theannular wall portion, the first groove is closer to the peripheralopening than the annular wall portion along an extending direction ofthe first conduit; the first sealing member of the heat exchangeapparatus is accommodated in the first groove; the second groove iscloser to the peripheral opening than the first groove; the connectingmember comprises a limiting groove, the limiting groove is arrangedopposite to the second groove in position; the heat exchange apparatuscomprises a limiting member, and at least part of the limiting member isclamped into the second groove and the limiting groove; or, the bottomsection comprises a threaded portion, the connecting member comprises avalve seat matching portion and the drainage pipe, the valve seatmatching portion comprises an internal threaded portion, the valve seatmatching portion is threaded with the bottom section, at least part ofthe drainage pipe protrudes into the valve seat matching portion, andthe drainage pipe is fixed to the valve seat matching portion bywelding; or, the connecting member comprises a second end portion, thebottom section protrudes into the first end portion, the bottom sectioncomprises the first groove, the first sealing member of the connectingmember is located in the first groove, and the first sealing member isarranged abutting against an inner periphery of the first end portion;the heat exchange apparatus comprises a bottom pressing block, thebottom pressing block is fixed to the sheet portion by welding, thebottom pressing block comprises a communication hole, the communicationhole is in communication with the first conduit, the bottom pressingblock comprises a protrusion, at least part of the protrusion protrudesinto the first conduit, the second end portion of the connecting memberis located in the bottom pressing block, and the second end portion isfixed to the bottom pressing block by welding.
 7. The heat exchangeapparatus according to claim 1, wherein the connecting member comprisesa drainage pipe, and the middle section is located above the connectingmember providing that a side of the core body member arranged with thevalve core member is taken as an upper side; the core body membercomprises a third sheet and a fourth sheet, the third sheet is fixed tothe fourth sheet by welding, the third sheet comprises a first annularprotruding portion, the fourth sheet comprises a second annularprotruding portion, the bottom section protrudes into the first annularprotruding portion, the bottom section comprises a first groove, a firstsealing member of the heat exchange apparatus is located in the firstgroove, and the first sealing member is arranged abutting against thefirst annular protruding portion; the first end portion of theconnecting member protrudes into the second annular protruding portion,and the second annular protruding portion is fixed to at least part ofthe first end portion by welding.
 8. The heat exchange apparatusaccording to claim 7, wherein a first hole is provided in the firstannular protruding portion, the first hole is provided in the secondannular protruding portion, the first conduit extends through the firstannular protruding portion and the second annular protruding portion,the first annular protruding portion protrudes into the first hole of asheet adjacent to the third plate, the second annular protruding portionprotrudes into the first hole of a sheet adjacent to the fourth plate, agap is provided between the first annular protruding portion and a wallportion of the first hole provided in the sheet adjacent to the thirdplate, and a gap is provided between the second annular protrudingportion and a wall portion of the first hole provided in the sheetadjacent to the fourth plate.
 9. The heat exchange apparatus accordingto claim 7, wherein the connecting member comprises a second endportion, and the second end portion is fixed to the core body member bywelding; the first end portion comprises a first section and a secondsection, the first section of the first end portion protrudes into thesecond annular protruding portion, the second section does not protrudeinto the second annular protruding portion, an outer diameter of thesecond section is greater than an outer diameter of the first section,and the outer diameter of the second section is tapered toward the firstsection.
 10. The heat exchange apparatus according to claim 1, whereinthe heat exchange apparatus comprises a first blocking portion, thefirst conduit is separated by the blocking portion, the first conduitcomprises a first sub conduit located on one side of the first blockingportion and a second sub conduit located on another side of the firstblocking portion, the peripheral opening is in communication with thefirst sub conduit, and the first sub conduit is not in directcommunication with the second sub conduit.
 11. The heat exchangeapparatus according to claim 10, wherein the sheet portion comprises afifth plate, the fifth sheet comprises the first blocking portion, thefirst blocking portion is fixed to an outer wall of the connectingmember by welding; or, the first blocking portion is formed by extendingthe fifth sheet, the first blocking portion extends along a radialdirection of the connecting member, and the first blocking portion isfixed to the fifth sheet by welding; the bottom section is located inthe connecting member, the bottom section is arranged sealed to theconnecting member, and the first blocking portion is located below theperipheral opening providing that a side of the core body memberarranged with the valve core member is taken as an upper side along anextending direction of the first conduit.
 12. The heat exchangeapparatus according to claim 10, wherein the core body member comprisesa sixth plate, the core body member comprises a second blocking portion,the second blocking portion is part of the sixth sheet or the secondblocking portion is fixed to the sixth sheet by welding, the secondblocking portion is located in the second conduit, the second conduitcomprises a third sub conduit and a fourth sub conduit, the third subconduit is located on one side of the second blocking portion, and thefourth sub conduit is located on another side of the second blockingportion; the second blocking portion is located below the first blockingportion along an extending direction of the first conduit providing thata side of the core body member arranged with the valve core member istaken as an upper side.
 13. A manufacturing method for a heat exchangeapparatus, comprising: provide a sheet portion, and put the stackedsheet portion into a furnace for welding, wherein the welded sheetportion comprises a first conduit, a second conduit and an inter-sheetspassage; provide a valve core member and a connecting member, protrudepart of a valve seat portion of the valve core member into the firstconduit of the welded sheet portion, wherein the valve seat portioncomprises a bottom section and a middle section and the middle sectioncomprises a peripheral opening; protrude part of the bottom section intothe connecting member, sealingly connect the bottom section with theconnecting member by providing a first sealing member, and assemble andfix the valve core member and the connecting member; and assemble andfix the valve core member and the core body member.
 14. Themanufacturing method for the heat exchange apparatus according to claim13, comprising: provide a bottom pressing block, protrude part of theconnecting member into the first conduit, arrange a flange portion ofthe connecting member between the bottom pressing block and the sheetportion, and sealingly connect the connecting member and the sheetportion by providing a second sealing member; assemble and fix thebottom pressing block, the connecting member and the sheet portion; andprotrude the valve seat portion from a side opposite to the side of thecore body member assembled and fixed with the connecting member, intothe first conduit of the welded sheet portion, wherein the valve seatportion comprises the bottom section and the middle section and themiddle section comprises the peripheral opening, protrude the bottomsection into the connecting member, and sealingly connect the bottomsection with the connecting member by providing a sealing member. 15.The manufacturing method for the heat exchange apparatus according toclaim 13, comprising: provide a bottom pressing block, and putting thewelded sheet portion and the bottom pressing blocking into the furnacefor welding; assemble and fix the valve seat portion and the connectingmember; and protrude the assembled connecting member and the assembledvalve core member from a side of the sheet portion which is not weldedto the bottom pressing block, into the first conduit, protrude part ofthe connecting member into the first conduit, protrude another part ofthe connecting member into the bottom pressing blocking, and sealinglyconnect the connecting member with the bottom pressing block byproviding a second sealing member.
 16. The heat exchange apparatusaccording to claim 4, wherein the sheet portion comprises a first sheetand a second plate, the first sheet is fixed to the second sheet bywelding, and a top or a bottom of the flange portion is fixed to thefirst sheet by welding; or the top or the bottom of the flange portionis fixed to the second sheet by welding; and/or the core body membercomprises a top pressing block, and the flange portion is fixed to thetop pressing block by welding.
 17. The heat exchange apparatus accordingto claim 8, wherein the connecting member comprises a second endportion, and the second end portion is fixed to the core body member bywelding; the first end portion comprises a first section and a secondsection, the first section of the first end portion protrudes into thesecond annular protruding portion, the second section does not protrudeinto the second annular protruding portion, an outer diameter of thesecond section is greater than an outer diameter of the first section,and the outer diameter of the second section is tapered toward the firstsection.
 18. The heat exchange apparatus according to claim 11, whereinthe core body member comprises a sixth plate, the core body membercomprises a second blocking portion, the second blocking portion is partof the sixth sheet or the second blocking portion is fixed to the sixthsheet by welding, the second blocking portion is located in the secondconduit, the second conduit comprises a third sub conduit and a fourthsub conduit, the third sub conduit is located on one side of the secondblocking portion, and the fourth sub conduit is located on another sideof the second blocking portion; the second blocking portion is locatedbelow the first blocking portion along an extending direction of thefirst conduit providing that a side of the core body member arrangedwith the valve core member is taken as an upper side.